import threading, time

event = threading.Event()

def lighter():
    count = 0
    event.set()     #先设置一个表示位
    while True:
        if 5 < count < 10:      #改成红灯
            event.clear()      #把标志位清了
            print('\33[42;1mred light is on\33[0m')

        elif count > 10:
            event.set()     #变绿灯
            count = 0
        else:
            print('\33[41;1mgreen light is on\33[0m')
        time.sleep(1)
        count += 1

def car(name):
    while True:
        if event.is_set():    #判断标志位是否设置，是否是绿灯
            print('gogogogogogogoggogogogogogogogo')
            time.sleep(1)
        else:
            print('stopstopstopstopstopstopstopstopstopstop')
            event.wait()
            print('冲冲冲冲冲冲冲冲冲冲冲冲冲冲冲')

light = threading.Thread(target=lighter)
light.start()

car = threading.Thread(target=car, args=('BYD',))
car.start()